A three-week old baby white-naped mangabey (Cercocebus atys lunulatus) has been named ‘Hope’ given that her species is vanishing from the wild. Photo by: James Godwin, ZSL. Born at the Zoological Society of London’s (ZSL) London Zoo, this white-naped mangabey (Cercocebus atys lunulatus) represents one of the Africa’s most imperiled monkeys and is apart of the European Endangered species Programme (EEP). The...

The world’s bamboo lemurs are also known by the more evocative name, the gentle lemurs. Currently these lemurs are separated into five species, all of which are threatened with extinction. These photos are of the Eastern Lesser Bamboo Lemur which is classified as Vulnerable by the IUCN Red List. Photos by Rhett A. Butler. More photos of bamboo...

Note: mongabay.com does not endorse the action below, but believes its readers may be interested in taking action or discussing the issue in comments. Male gorilla in Gabon. Photo by: Rhett A. Butler. The government of the Democratic Republic of Congo (DRC) is currently considering allowing oil companies SOCO and Dominion into Virunga National Park for drilling. Home to a quarter of the world’s mountain gorillas, as well as...

The Mexican spider monkey (Ateles geoffroyi vellerosus), a subspecies of Geoffroy’s spider monkey, is classified as Critically Endangered by the IUCN Red List. Surviving in Mexico and parts of Central America, the species has been decimated by habitat loss. These shots were taken in Mexico. Photos by: Rhett A....

Nicknamed ‘Tiny’, a three-month old baby male gorilla took his first steps a the Zoological Society of London (ZSL) Zoo. Tiny had not left his mother since birth, but the 12-year-old mom, named Mjukuu, encouraged him to begin exploring his home. While Tiny is beginning to get his first teeth, keepers say he has awhile to go before reaching a full-sized silverback male. Photos courtesy of...

From the Science Channel show Mutant Planet, this episode on Madagascar looks at the bizarre turns evolution takes on one of the world’s most unique islands. To find out more information and see more videos from the production: Mutant Planet:...

A Sumatran orangutan (Pongo abelii) makes a face. Listed as Critically Endangered the Sumatran orangutan is largely threatened by habitat loss to plantations, such as wood pulp and palm oil, and logging. After losing their forests, many orangutans, such as this one, are now housed in rehabilitation centers. Photo by: Rhett A. Butler. Click to see more photos of...

Mjukuu with her new baby boy. Photo courtesy of the Zoological Society of London (ZSL) . On October 26th, the London Zoo received a new arrival: a baby western lowland gorilla. The as yet unnamed boy was born to first-time mother Mjukuu. Zoological director, David Field, said the pair were doing ‘brilliantly’. Classified by the IUCN Red List as Critically Endangered, western lowland gorillas, a subspecies of lowland...

Twin marmosets were born at the Bronx Zoo on November 11 to three-year-old mom, Squirt, and seven-year-old dad, King. Although his name implies royalty, his primary responsibility is child-rearing – shown here giving his little ones a “ride”. This is Squirt’s third litter and the family can be seen at the Bronx Zoo’s Congo Gorilla Forest exhibit. Marmosets are among the world’s smallest primates with their heads just a little larger...